Quantum Maximum Likelihood Decoding for Linear Block Codes
Quantum Maximum Likelihood Decoding for Linear Block Codes
复制标题
线性分组码的量子最大似然解码
DOI:
10.1109/ictc49870.2020.9289350
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
J. Ha
中科院分区:
文献类型:
--
作者:
Hyunwoo Jung;Jeonghwan Kang;J. Ha
While the maximum likelihood decoding (MLD) is optimal, it suffers from a high decoding complexity. In this work, we propose a quantum MLD (QMLD) for linear block codes, which provides an optimal decoding performance at reduced asymptotic complexity. To this end, we utilize the Diirr- Høyer Algorithm (DHA) to find out a codeword, cML for a received signal vector y maximizing the conditional probability Pr(y|c) among codewords in a linear code C. Meanwhile, the DHA requires a quantum state representing the equiprobable superposition of all possible codewords as its input. To resolve the technical challenge, this work proposes a novel quantum circuit that produces the input quantum state to the DHA. Complexities of the proposed QMLD and classic MLD will be compared, which clearly demonstrates the computational superiority of the proposed QMLD.
影响因子:
5.7
作者:
Wang, Yazhen
通讯作者:
Wang, Yazhen